.AvatarStack {
  position: relative;
  min-width: 26px;
  height: 20px;

  .AvatarStack-body {
    position: absolute;
  }

  &.AvatarStack--two {
    min-width: 36px;
  }

  &.AvatarStack--three-plus {
    min-width: 46px;
  }

  &.AvatarStack--small {
    height: 16px;
    min-width: 20px;

    .avatar {
      width: 16px;
      height: 16px;
    }

    &.AvatarStack--two {
      min-width: 25px;
    }

    &.AvatarStack--three-plus {
      min-width: 30px;
    }

    .avatar.avatar-more {
      &::before,
      &::after {
        height: 16px;
      }

      &::before {
        width: 13px;
      }
    }

    &:hover {
      .avatar {
        margin-right: 1px;
      }
    }
  }
}

.AvatarStack-body {
  display: flex;
  background: inherit;

  // When the Avatar component fails to load an avatar
  // image it renders a fallback SVG instead. The symbol is
  // a generic silhouette of a person and we want to color
  // that according to the current theme. This is set in
  // avatar.scss already but duplicated here to override
  // the specificity of the .avatar background:inherit below.
  svg.avatar {
    fill: var(--text-secondary-color);
    background: var(--box-alt-background-color);
  }

  .avatar {
    position: relative;
    z-index: 2;
    display: flex;
    width: 20px;
    height: 20px;
    box-sizing: content-box;
    margin-right: -11px;
    background-color: inherit;
    box-shadow: 1px 0 0 var(--background-color);
    border-radius: 50%;
    transition: margin 0.1s ease-in-out;

    &:first-child {
      z-index: 3;
    }

    &:last-child {
      z-index: 1;
      box-shadow: none;
    }

    // stylelint-disable selector-max-type
    img {
      border-radius: 50%;
    }
    // stylelint-enable selector-max-type

    // Account for 4+ avatars
    &:nth-child(n + 4) {
      display: none;
      opacity: 0;
    }
  }

  &:hover {
    .avatar {
      margin-right: 3px;
    }

    .avatar:nth-child(n + 4) {
      display: flex;
      opacity: 1;
    }

    .avatar-more {
      display: none !important;
    }
  }
}

.avatar.avatar-more {
  z-index: 1;
  margin-right: 0;
  background: $gray-100;

  &::before,
  &::after {
    position: absolute;
    display: block;
    height: 20px;
    content: '';
    border-radius: 50%;
    outline: 1px solid $white;
  }

  &::before {
    width: 17px;
    background: $gray-200;
  }

  &::after {
    width: 14px;
    background: $gray-300;
  }
}
